AITAH if I stop going to my Dad’s house due to his drinking?

I (13 any) and my dad (56 M) are not getting along and I don’t know what to do. I have divorced parents (they divorced when I was 10 because of my dad’s drinking).

I have a sister (16 F) and a brother (20 M) and my mom (47 F).

Anyway I have been thinking about cutting off my dad but I don’t know if I’m just being dramatic or if I am doing the right thing. So my dad has a huge drinking problem. To put it into perspective, he drinks about 4 CL a day. He has a heart condition (Arrhythmia) that makes it so he has to take a lot of meds and he drinks his beer with them and he really isn’t supposed to. He has allianated both of my siblings because of his drinking and how he acts when he drinks. Basically he kept calling my sister a btch and he is really sexist and says a lot of things about how men are better than women and how women are weak and how they should just stay home. What he did to my brother is he threw him out of the house right before his freshman year of collage, which really messed up his first year. He also used to abuse my brother when he was younger ( he grabbed my brother by the arm when he was sitting in a chair and dragged him to the living room and threw him to the ground and basically just threw punches).

I‘m terrified of what he would do if he got drunk when all my siblings were in the house so I got them out and stayed because I had too. I had this idea that if I stayed, he wouldn’t go after my siblings.

He hasn’t done anything yet but I still keep a knife under my pillow that my mom gave me when I told her. I know a lot of people are gonna that I need to go to police/CPS, trust me I talked with a cop friend of mine and he said that right now, that isn’t a good idea because if got a whiff of police activity, he would take off. I have my cop friend (C) in my phone and he told me that if I ever thought that I was in immediate danger, to text/ call him and he’d grab some cops and head to the house.

I have a plan to slowly fade out, and the moment i turn 18, I tell him that collage is busy, sports are too much etc etc.

i also had a thought for alltomatum. either he stops drinking and gets help or i grab my stuff, walk out the door and never come back. I plan to talk to C about it but idk i don't like confrontation, but im so done. Im so freaking done.

i don’t want sympathy, i want advice. Would I be the AH if I stopped going to his house because of his drinking?